St Louis Weather Conditions & Forecast, February 11, 2018

St Louis Weather Conditions & Forecast, February 11, 2018

St Louis Weather Conditions, Forecast & Air Quality Index readings published by STL.News

ST LOUIS, MO/February 9, 2018 (STL.News) St Louis weather conditions & forecast readings from the St. Louis Lambert International Airport at 4:51 a.m at Latitude: 38.75°N, Longitude: 90.37°W – Elevation 604 feet.  Forecast is provided by the National Weather Service (N.W.S.).

Current Conditions

Hazardous Weather Outlook

Winter Weather Advisory

Temperature: 21°F – -6°C
Humidity: 100%
Wind Speed: NW 10 mph
Barometer: 29.95 in (1015.5 MB)
Dew-point: 21°F – -6°C
Visibility: 5 Miles
Wind Chill: 10°F – -12°C
Heat Index: N/A°F – N/A°C

Extended Weather Forecast for the St Louis, Missouri area beginning February 9, 2018

Overnight: Freezing drizzle, cloudy – low around 20 with NW wind around 10 mph.
Sunday: Chance of freezing drizzle early am followed by a chance of snow between 8 am and 9 am, cloudy – high near 29 with NW wind 7 to 13 mph and chance of precipitation – 20%.
Sunday Night: Mostly cloudy, gradually clearing – low around 16 with N wind 3 to 6 mph.
Monday: Sunny – high near 37 with NE wind 3 to 7 mph.
Monday Night: Mostly clear – low around 20 with east wind 3 to 7 mph.
Tuesday: Mostly sunny – high near 46.
Tuesday Night: Partly cloudy – low around 35.
Wednesday: Partly sunny – high near 62.
Wednesday Night: Mostly cloudy – low around 48.
Thursday: 30 percent chance of rain, mostly cloudy – high near 62.
Thursday Night: Chance of rain/snow, mostly cloudy – low around 28 – chance of precipitation – 40%.
Friday: Chance of rain/snow, partly sunny – high near 41 – chance of precipitation – 30%.
Friday Night: Chance of rain/snow, mostly cloudy – low around 25 – chance of precipitation – 20%.
Saturday: Partly sunny – high near 45.

Air Quality Index for Saint Louis, Missouri – (A.Q.I.)

Delayed Air Quality Index: 02/11/18 1:00 AM CST

  • Moderate – 58 AQI – Particle Pollution (2.5 microns)
  • Good – 26 AQI – Ozone
  • Good – 10 AQI – Particle Pollution (10 microns)

Agency: St. Louis Metropolitan Area (American Lung Association)

Air Quality Index (A.Q.I.)

Good – Air quality in considered “satisfactory” and air pollution poses little to no threat.

Moderate – Air quality is considered “acceptable.” However, some pollutants there may be a moderate health concern for a very small number of people who are sensitive to air pollution.

USG – while the general public will not likely be affected by this AQI range, people with lung disease, older adults and children are a great risk from exposure to ozone, whereas, persons with heart and lung disease, old adults and children are at greater risk from the presence of particles in the air.

Unhealthy – Everyone may begin to experience health effects members of sensitive groups may experience more serious health effects.

Very Unhealthy – Health Alert: everyone may experience more serious health effects.


Source: Current Weather Conditions and Forecast are obtained from the National Weather Service @ Forecast.Weather.Gov – Air Quality Index (AQI) readings are obtained from AirNow.Gov


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